Earplug insert for dual mode operation



FIG. 1 is a perspective view of an earplug insert for dual mode operation in a closed position,

FIG. 2 is a perspective view of the earplug insert for dual mode operation in a closed position,

FIG. 3 is a top view thereof,

FIG. 4 is a side view thereof, the other side being a mirror image,

FIG. 5 is a back view thereof,

FIG. 6 is a front view thereof,

FIG. 7 is the earplug insert for dual mode operation in an open position,

FIG. 8 is a top view thereof,

FIG. 9 is a side view thereof, the other side being a mirror image,

FIG. 10 is a back view thereof; and,

FIG. 11 is a front view thereof.

The broken lines showing a front earplug in FIG. 1 are for environmental purposes only and form no part of the claimed design. 

The ornamental design for an earplug insert for dual mode operation, as shown and described. 